Abstract
Immunoreactivities for estrogen receptor-α (ER-α) and ER-β are expressed in sensory neurons of the dorsal root ganglia (DRG). It has not been established, however, if the two receptor subtypes coexist in the same neuron. Double-staining immunohistochemical techniques were used to determine if subpopulations of neurons in the lumbosacral DRG exist based on their content of ERs. Results indicate that some neurons (approximately 17%) of the L6–S1 DRG contain ER-α –, some (approximately 23%) contain ER-β – immunoreactivity and some (approximately 5%) express immunoreactivity for both subtypes of the ER. These results suggest that many sensory neurons can respond to estrogens, but estrogens may produce different morphofunctional effects in different neurons based on their expression of ER subtypes.
Published Version
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